The Blazers were a contender because they drafted Clyde, Porter, Kersey, and Cliff. Yeah they added a few vets at the end of the rotation, AFTER they built a great young core in the draft.
Thats totally different than the Blazers now having one young 19 year old piece of a core and trying to cram mediocre vets on his team. Teams that do that stay somewhere between mediocrity and purgatory.
Your example actually clearly illustrates that the Blazers need to keep their lottery pick and use it to build a great young core. If the Blazers traded Clyde and Porter for Buck Williams a couple years earlier they wouldn't have won shit.